In a statement, the company said the accident which took place during an overload test of the crane was the result a broken crane hook provided by a third-party supplier.

The incident took place May 2 during load testing of a 5,500-tonne capacity Liebherr-MCCtec Rostock HLC 295000 crane on board the Orion 1, a newbuild offshore wind installation vessel being built for DEME.

The vessel, which is under construction by COSCO (QIDONG) Offshore, arrived at the Liebherr construction yard last November for installation of the crane – the final phase in the construction process.